.c-button-group {
  display: inline-block;
  vertical-align: middle;
  font-size: 0; }
  .c-button-group > .o-button {
    margin-left: -1px;
    border-radius: 0; }
    .c-button-group > .o-button:hover {
      position: relative; }
  .c-button-group > .o-button:first-child {
    margin-left: 0;
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px; }
  .c-button-group > .o-button:last-child {
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px; }
